Improved process for deodorizing petroleum, naphtha



UNITED STATES PATENT OFFICE.

SYLVESTER LEWIS, OF ROCHESTER, NEW YORK, ASSIGNOR TO UNION OIL COMPANY,

IMPROVED PROCESS FOR DEODORI ZING PETROLEUM, NAPHTHA, &c.

Specification forming part of Letters Patent No. 44,258, dated September 13, 1864.

.To all whom it may concern.-

Be it known that I, SYLVESTER LEWIs, of Rochester, Monroe county, and State of New York, have invented or discovered a new and useful Improvement in Deodorizing Petroleum and Kerosene Oils, N aphtha, Benzole, and Benzine; and I do hereby declare that the following is a full, clear, and exact description of such process or invention.

This invention is an improvement on a previous one having reference to the same object or purpose, and which was patented to me by the United States by Letters Patent bearing date the 10th day of May, 1864, which invention, as described or set forth in said Letters Patent, consisted in the use of ashes and charcoal for deodorizing petroleum and kerosene oils, &c., mixed together in about the proportions of one quart of charcoal to one bushel of ashes, or substantially in such proportions, and then leaching or passing the petroleum, 850., through such mixture or material. Further experiments and more careful and extended observation have, however, demonstrated that the proportions of such materials-ashes and charcoalmay be very considerably varied from those mentioned in such former Letters Patent and still the deodorizing be satisfactorily efl'ected. When the petroleum, kerosene, naphtha, &c., have a stronger odor and demand a more perfect deodorizing, the proportion of ashes may be increased until but little, if any, charcoal will be required to be mixed with them. It will, however, be borne in mind that in all wood-ashes as usually obtained there is more or less (and generally in a very appreciable quantity) of fine coal or charcoal, so that naturally and of course there is in all wood-ashes more or less of charcoal. 0n the other hand, when the petroleum-oil, 850., have less odor, or when wood-ashes are not readily attainable, a larger proportion of charcoal may be made use of, and it even may be in excess of the ashes. Care should, however, be taken not to use so much charcoal as to impart to the deodorized productany odor of creosote.

Goal-ashes may also be mixed to some considerable extent with the wood-ashes in the leach; but as they contain less alkali than wood-ashes they should generally not be used very freely. The proportion of coal-ashes may also be varied somewhat, according to the character of the wood-ashes. When the latter are fresh and strong coal-ashes may be mixed in the proportion ot'aboutone-halt, though generally so large a proportion is not advisable. Goal-ashes are, however, desirable to some extent in most cases, as they serve to keep the leach more light and porous, and thus secure more rapid leaching or deodorizing.

What I claim as my invention, and desire to secure by Letters Patent, is

The deodorizing of petroleum and kerosene oils, naphtha, benzole, and benzine by the use of ashes and charcoal, substantially as set forth.

SYLVESTER LEWIS. Witnesses:

H. D. SORANTON, S. D. LAW. 

